Spraying apparatus



v 3,635,94 y 1927' E. M. BASSLER 9 SPRAYING APPARATUS Filed. April 17,1924 2 Sheets-Sheet 1 July 26, -1927'. 1,636,949

E. M. BASSLER SPRAYING APPARATUS Fil d April 17, 1924- I 2 Sheets-Sheetz Patented July 26, 1927.

UNITED STATES EDWIN BASSLEB, OF MILWAUKEE, \VISCONSIN.

SPRAYING APPARATUS.

Application filed April 17, 1924. Serial No. 707,080.

This invention relates to spraying apparatus of the general type whichforms the subject-matter of U. S. Letters Patent'No. 1,560,527, datedNovember 10, 1925, issued to me for improvements in spraying apparatus,and relates particularly to spraying runners therefor.

Spraying apparatus of the type specified is particularly well adaptedfor clarifying air and gas by removing therefrom dust and other solidparticles of dirt contained therein.

In the use of spraying apparatus of this general type, the runnerforming part of the apparatus is mounted within a trunk, conduit orhousing through which a current of air or gas to be clarified orscrubbed is adapted to pass, a common arrangement being one in which therunner is mounted just beyond the inner end of the air or gas intake ofa housing forming part of the apparatus, in position to define a spacebetween the periphery of the disk portion'of the runner and the innerend of the air or gas in take, across which the pins of said runner willextend, their outer or free ends termi nating in close proximity to thewall of said intake, so that all of the air or gas to be treated willpass between said pins and will be subjected to a beating action therebycoincidentally with the conversion of the water or other liquid usedinto spray, and will become thoroughly mixed and intermingled with suchspray so that the solid particles will become wet. Said spraying runneris preferably surrounded by a bailie against which the mixed spray andwet solid particles will be projected at high velocity, the impact ofsaid mixture against said battle and material previously depositedthereon, operating to hold the mixture upon the sur face of said bafflefor a short interval of time, sufiicient, however, to thoroughly wet thesolid particles contained therein and to cause them to adhere to thebaffle, from which they will be washed down-into a suitable receptacleprovided for the purpose,

Described generally, spraying apparatus of the type to which myinvention relates comprises a runner consisting of a central diskportion which forms the body. of the runner and pins secured in saiddisk at a distance from its axis of rotation, said pins being preferablyarranged in a circular series concentric with the axis of rotation ofsaid disk.

One object of the present invention is to provide a runner forsprayingiapparatus of this general type, in which the disk portion ofsaid runner will be relatively very small as compared with the overalldimension thereof and also of the air intake of the apparatus or othertrunk or conduit to which my improved spraying apparatus is applied,whereby said runner will obstruct or throttle said intake, trunk orconduit to a relatively small extent while, at the same time,maintaining full efficiency of said runner.

A further object of the invention is to increase the eihciency ofrunners of the gen eral type specified, whereby, for a given duty, thesize of the runner may be very much reduced as compared with runners ofthe particular type shown and described in my said prior Patent No.1,560,527, having a single set of pins, thereby effecting acorresponding saving in the cost of the runners, both in material andlabor, while, at the same time, rendering it much easier to handlerunners designed for treating large volumes of air or gas.

In accordance with my invention, I attain the objects thereof by the useof a runner comprising a plurality of'sets or series of spraying pinsarrangedconcentric with the axis of rotation of said runner and atclifferent distances therefrom, the free ends of the inner set or seriesterminating adjacent to the attached ends of the outerseries and in suchrelation thereto that spray from the inner set or series of pins will bedischarged across the path of movement of the outer set .of my saidprior application.

The invention also comprises the various other features, combinations offeatures and details of construction hereinafter described and claimed.7

-lathe accompanying drawings, in which spraying apparatus embodying myinvention and improvements is fully illustrated,

Figure 1 is a "face view of a'runner embodying my invention andimprovements.

Figure 2 is a side view thereof, partly in elevation and partly insection on the line f22 of Fig. 1.

Figure 3 is a top plan view of an air or gas washing and scrubbingapparatus comprising a runner of my invention, parts thereof beingbroken away; and

Figure 4 is a side view, partly in elevation and partly in verticalcentral section.

Describing the runner of my improved spraying apparatus, to which thepresent invention particularly relates and which is designated a wholeA, 1 is a disk forming part of the traineor body portion out saidrunner, preferably made of cast iron or other suitable cast metal, thefront face thereof being substantially conical in shape, the apex of thecone being concentric with the axis of rotation of the runner, and thesides of said cone being slightly concave.

Formed on the rear side of the disk 1 is a hub. 2 provided with a holeor opening 3 adapted to receive the shaft for mounting; said disk. Saidhub is preferably connected to the body portion of said disk 1 by ribs 4which render the entire structure relatively lightand at the same timevery strong and rigid.

The apex of the conical front side oi the dish: 1 comprises a separatesection 5, pretcrably made of bronze reinovably secured in the end oithe hole or Opening in the hub 2. which extends entirely through the hub2 and disk 1, said apex portion 5 having screw tlui'eadcd engagementwith an enlargement of said hole or opening, as shown at 6. and com'irising a reducedinner portion 7 closely titted to the hole or opening3. hen th apex portion 5 is removed, the screw threaded hole 8 providesconvenient means for making lifting connections to said runner.

My improved runner also comprises two sets of spraying pins designated,respectively, 8, 8.

The pins 8 are secured in the perimeter of the disk 1 and are flaredtrontwards relative to the face thereof at a wide angle to its axis ofrotation.

In the preferable construction shown. the pins 8 are secured directly ina ring 9, which forms a detachable portion of the disk. 1, being fittedto the perimeter thereof and secured thereto bylugs 10 thereon which arebolted or otherwise secured to corresponding lugs 11 on the disk 1. Saidring will desirably be made of bronze. Convenient means for thussecuring the pins 8 in the ring 9 consist in forming holes in said ringat proper angles, to which the pins 8 are titted and through which theyare inserted before said ring is secured in position on the disk 1, theinner ends oi said holes being countersunk as shown at 12, and the pinshaving correspondinglytapered heads 13, the relation being such thatwhen the pins are inserted through the holes in said rirg and said ring,is adjusted and secured to the disk 1, the heads of said pins will bearagainst the perin'ieter of said disk.

The pins 8 of the outer set or series, are secured in a ring; 1 Lsupported at the outer ends oi: arms 15 bolted or otherwise rigidlysecured to the disk 1. As shown, lugs 16 formed on the ring; 1 1: arebolted to corresponding; lugs 17 formed on the ends of the arms 15.

The pins 8' are secured in the ring 1% in substantially the same mannerthat the pins 8 are secured in the ring 9, being retained therein by aring 18 secured to the inner side of said ring; 1- 1 so as to extendover the countersunk inner ends of the holes in which the tapered headsout said pins 8 are secured.

The pins 8 and the arms 15 are made of such relative lengths that theouter ends of the pins 8 will terminate at or adjacent to the attachedends of the pins 8 ol the outer set or series.

The inner or series of pins 8 are troutwardly and outwardly flared, therelation being such that spray tornied thereby will be discharged acrossthe path oi? movement oi the outer set or series of pins 8", pr, erablyin such manner that the larger volume thereof will be discharged uponsaid outer set or series of pins adjacent to their attached ends.

I have found in practice, that the best re sults are obtained with theuse of pins which tlare at a vide angle relative to the axis of rotationof said runner, the inner set or series of pins preferably flaring at agreater angle than the outer set or series of pins.

lVhat I now consider a preferable and desirable relation is one in whichthe pins 8 flare at an angle of approximately degrees and the pins 8 atan angle of appro mately 60 degrees to the EUClSbf rotation of saidrunner.

This relation, however, admits of variation within considerable limits.

In practice, the pins ot both sets or series are spaced relatively shortdistances apart, the distance between said pins increasingoutwardly,owing to the flare oi the pins. lin practice, I have found a desirablerelation to he one in which the distance between said pinsboth ot' theinner and outer series, at their attached ends. is substantially equalto the diameter of the pins, a desirable size of pins for most purposesbeing about 1, of an inch in diameter,

In Figs. 3' and a. 1' have for purposes of Clear and definiteillustration shown. my in proved runner embodied in an apparatus adaptedfor washing or scrubbing air or gas, said apparatus comprising a mainhousing, which may be made of sheet metal or other suitable material,designated as a whole B. Said housing comprises cylindrical side walls19, the lower ends of which rest upon suitable supports or piers 20,preferably made of concrete, and the upper end of which is closed by atop wall 21 preferably made of cast iron provided with a central openingsecured in which is a short, hollow open ended cylinder or thimble 22,the opening through which forms the air or gas intake of the apparatus.Where the apparatus is designed for washing or scrubbing gas, other thanair, a suitable supply pipe or flue is adapted to be connected to theouter end of said cylinder 22.

The lower end of the housing B is closed by means of a sheet metalbottom 24 which is made in the shape of a truncated cone, the lower endthereof being secured to the lower end of the side walls 19 of thehousing B;

The housing B is also provided with discharge openin s for the washed orscrubbed air or gas consisting, as shown, of holes or openings 25 formedin the top wall 21 of the housing adjacent to its outer edge. Saiddischarge openings communicate with a bustle pipe 26 adapted to connectsaid housing with a fan or blower of any usual type or design, notshown, adapted to create a current of air or gas to be treated throughthe housing of the apparatus.

My improved runner A is mounted directly below the inner end of thecylinder 22 which defines the intake 23 of the housing B. As shown, saidrunner is mounted at the upper end of an upright shaft 27, havinghearings in the flat upper end of the bottom 2% and on a concrete baseor foundation 28. Rotation is adapted to be imparted to the shaft 2? andrunner A secured thereto by a motor, indicated at 29, mounted on thefoundation 28, the rotor shaft 30 of which is con nected to a pinionshaft 31 by means of a flexible coupling The pinion shaft 31 is mountedin a bearing 33 on the foundation 28 and secured thereto is a bevelpinion 34 which meshes with a bevel gear 35 secured to the shaft 27.

The disk 1 of the runner A is relatively much smaller than the intake 23of the housing B and is preferably positioned beyond the inner end ofthe intake cylinder or thimble 22, the relation being preferably suchthat the free area of the space between the periphery of said disk andthe inner end of said cylinder or thimble will be substantially equal tothe transverse area of said intake. Also, the pins '8, 8 and the arms 15are proportioned so that the outer ends of the outer set or series ofpins 8 will extend into close proximity to the inner end of the cylinder22 forming the intake 23, so that i all air or gas entering the housingB through said intake will pass between the pins 8, 8 of the apparatus.

Surrounding the spraying runner A at a distance therefrom and betweensaid runner and the discharge openings 25 through which thewashed air orgas passes from the housing B into the bustle pipe '26 is a baffle (36.

Water is adapted to be projected axially against the apex ofthe conicalfront face of the disk 1 of the spraying appartus from a nozzle 37supported at the end of a pipe section 38 which is connected to aflanged connection 39 on the cylinder 22,.the outer end of which isadapted to be connected with a source of supply of water or other liquidunder pressure by a pipe 40.

Suitable drainage connections for the housing B are provided at itslower end, but said connections form no part of the present inventionand for that reason are not shown.

In operating the apparatus, the motor 29 is firststarted and when thespraying runner A is rotating at desired speed, the water is admitted tothe pipe 30 from which it is discharged against the conical face of thedisk 1 through the nozzle 37 and, as soon as suitable spray curtain isproduced across the space traversed by the air or gas to be washed, theblower applied to the bustle pipe 26 is started, thus putting the entireapparatus into operation.

The water orother liquid projected against the conical face of the disk1 will be spread out over the face of said disk in the form of a thinsheet, in which form it will pass off from said disk and into the pathdescribed by the inner set or series of the pins 8 by which it will besubjected to a combined beating and centrifugal action which, aspreviously explained, will convert the water into spray, and 'willproject the spray particles outwardly into the path of movement of theouter'set or series of pins 8 which, owing to their greater peripheralspeed, will in turn, subject the spray particles to a further, beatingand centrifugal action, which will reduce them to a spray of desiredfineness.

The runner A will operate to throw the spray particles formed thereby,together with the air or gas entering the housing 'B through the intake23, outwardly at high velocity and will produce a thorough mixing orintermingling of the air or gas, par ticularly the solid particlescontained therein, with the spray particles, thus wetting said solidparticles and causing them to be thrown a ainst the baflle 36, wherethey will be held I01 a short interval of time, sufli cient, however, sothat said solid particles will become thoroughly wet and will ultim t ybe Wash d down from he flie in o the lower end of the housing B by thewater formed by the accumulation o1 spray thereon.

The baffle 36 will also prevent entrainment of spray particles by thecurrent of air or gas into the air and gas discharge connections of theapparatus. 7

Extended comparative tests and experiments in actual use havedemonstrated that with the use of my improved spraying runnerhaving twosets or series of pinssubstantially the same eificiency and results maybe obtained with a runner having an over-all diameter oi approximatelysix feet (6'), as can be obtained with a runner comprising only one setor series of pins, having an over-all diameter of from ten (10) totwelve (12) feet, under substantially similar operating conditions. Theair and gas washing apparatus shown in Figs. 3 and 4; of the drawingsanddescribed in the specification is not herein claimed, for the reasonthat it forms the sub ject-matter of and is fully shown, described andclaimed in an application for U. S. Letters Patent therefor heretoforefiled by me on or about August 20, 1923, and numbered serially 658,360,to which reference is here made in accordance with'th-e provisions ofrule 42} of the Patent Oiiice Rules of Practice.

I claim- 1. A runner for spraying appantus oi the type specified,comprising a body portion, a plurality of outwardly-flared sets ofspaced pins which project from said body portion at diflierent distancesfrom its center, said body portion comprising a central disk in whichthe innermost set out pins is secured and against whichliquid is adaptedto be discharged in operation, the free ends of the pins of an inner setbeing positioned in such relation to the pins of an adjacent outer setthat spray from the inner set of pins will be discharged across the pathtraversed by the pins of said adjacent outer set. 2. A runner forspraying apparatus of the type specified, comprising a body portion, aplurality of outwardly-flared sets of spaced pins which project fromsaid body portion at different distances from its center, said bodyportion comprising a central disk in which the innermost set oit'pins issecured and against which liquid is adapted to be discharged inoperation, the tree ends of the pins of an inner set terminatingadjacent to the attached ends of the pins of an adjacent outer set, therelation being such that, in operation, spray from the inner setof pinswill be discharged across the path traversed by the pins of the acentouter set. V 3. A runner for spraying apparatus as specified in claim 1,which comprises only two sets of pins.

i. A runner for spraying apparatus as specified in claim 1, in which thediit erent sets 01 pins are arranged in circular series.

A runner for suraying apparatus as specified in claim 1, in which thedififerent sets of pinsare flared at difi'erent angles to the axis ofthe runner, the inner set being flared at a greater angle than theadjacent outer set.

6. A runner for spraying apparatus as specified, in claim 1, in whichthe diameter of the central disk is relatively much less than theoverall diameter of the runner.

7. A runner for spraying apparatus as specified in claim 1, in which thenumber of pins in each set increases successively from the innermost setoutwards.

8. A. runner for spraying apparatus as specified in claim 1, in whichthe pins of differen sets are spaced substantially equal distancesapart.

9. A runner for spraying apparatus as specified in claim 1, in which thepins of difi'erent sets are of substantially equal lengtl I 10. A runnerfor spraying apparatusof the type specified, comprising a body portion,a plurality of outwardly-flared sets of spaced pins which project fromsaid body portion at different distances from its center, said bodyportion comprising a central disk in which the innermost set of pins issecured and against which liquid is adapted to be discharged inoperation, the free ends of the pins of an inner set being positioned insuch relation to the pins of an adjacent outer set that, in operation,spray from the inner set of pins will be discharged across the pathtraversed by the pins of said adj acent outer set, arms secured to saiddisk and a ring secured to said arms in which an outer set of pins issecured.

11. A runner for spraying apparatus as specified in claim 10, in whichthe means for securing said pins in said body portion comprises acircular seat formed on said body portion, and a ring secured to saidseat, said ring being provided with holes through which said pins areinserted, the inner ends oi: said holes eing countersunk and the pinshaving correspondingly tapered heads, contact of the heads of said pinswith the seat on the body portion of the runner when said ring isadjusted thereto operating to secure said pins in said holes.

In witness that I claim the foregoing as my invention, I aiiix mysignature this 28th day of March, A. D. 1924.

EDWIN M. BASSiLER.

